CN100533492C - Magnetic document authentication feature to be detected by the human sense of touch - Google Patents
Magnetic document authentication feature to be detected by the human sense of touch Download PDFInfo
- Publication number
- CN100533492C CN100533492C CNB2004800258253A CN200480025825A CN100533492C CN 100533492 C CN100533492 C CN 100533492C CN B2004800258253 A CNB2004800258253 A CN B2004800258253A CN 200480025825 A CN200480025825 A CN 200480025825A CN 100533492 C CN100533492 C CN 100533492C
- Authority
- CN
- China
- Prior art keywords
- document
- magnetic
- magnetic ink
- ink zone
- sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Credit Cards Or The Like (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Printing Methods (AREA)
- Air-Conditioning For Vehicles (AREA)
- Holo Graphy (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Abstract
In order to check the authenticity of a banknote or other such document it is printed with two patches (2) of magnetisable ink, and each patch is magnetised to present a multipole sequence of alternating polarity. If the document is folded to bring the two patches together and then rubbed to and fro in the direction of the pole sequences, they will be subject to alternating forces of attraction and repulsion which can be sensed through the fingertips and gives the impression of a physically rippled texture notwithstanding that the patches (2) actually have a smooth surface. The presence or absence of this effect can therefore be used to distinguish between a genuine document bearing such magnetised patches and a counterfeit which may be visually identical but lacks the correct magnetisation. In a variant only one of the patches is printed on the document itself and the other is on a separate 'key' device which is rubbed over it to test for the presence of the correct magnetisation.
Description
The present invention relates to check employed document in the method for authenticity of document and this method.More especially, the present invention relates to the method based on the check authenticity of document that uses magnetic ink, by simple operations, end user's sense of touch can realize this method as Discr..The present invention can be used to check the authenticity that can deposit or adhere to any kind document of magnetisable ink regions on it in principle, these documents include but not limited to banknote, check, credit card, passport, driving license, label, ticket, voucher, stamp, bond, security and stock, legal notice (legalcommunication), with and inherence or extrinsic value any other this document of needing protection and avoiding forging.
Existed the many machine readables that use various different technologies to get imitative forgery measure, be used to protect various documents, these measures need use special external unit with the checking authenticity.Easily by the perception of people's vision institute, the security level of these measures depends on that potential adulterator duplicates the degree of difficulty and the cost of this same characteristic features such as other measure of watermark and hologram.A target of the present invention provides a kind of form that substitutes of false proof measure, this measure can or be used as independently measure as a kind of auxiliary of existing form in appropriate situation, this measure in a preferred embodiment need not any outer setting and checks authenticity (perhaps only require in other embodiments and use simple external device (ED)), make and to exist the Any user of this technology can carry out the checking of authenticity by understanding, but the existence of this measure need not visually to look to be that it duplicates to potential adulterator and has formed technology barrier uniformly.
Therefore one aspect of the invention is and check and have the authenticity that is magnetized with the document in the magnetic ink zone of the multipole sequence that produces alternating polarity, the method comprising the steps of: make described zone and produce between second magnetic regions of multipole sequence of alternating polarity to relatively move, described moving direction is along the direction of described sequence, and end user's sense of touch detects the process that alternation attracts and repels between these zones of causing thus in this process that relatively moves.
A second aspect of the present invention is a kind of device, this device comprises and has the magnetic ink zone that is magnetized with the multipole sequence that produces alternating polarity, and comprise second magnetic regions of the multipole sequence that produces alternating polarity, use this device can verify the authenticity of described document by following step: described zone is relatively moved along the direction of described sequence, and end user's sense of touch to detect alternation attraction and the repulsion of consequent these zones in this relatively moves process.
In a preferential embodiment, second magnetic regions is to be positioned at originally on one's body the second magnetic ink zone of document, and the document can be folded and make these two zones form the relations of facing, and operates subsequently to cause aforementioned relative movement.In another embodiment, this second magnetic regions be carried on the document separated structures on, this second area through this first area or this first area through second area.
The present invention also comprises a kind of document, wherein uses the authenticity of checking the document according to the method for first aspect defined above.
To with reference to accompanying schematic figure these and other aspect of the present invention be described more specifically in the mode of example now, wherein:
Fig. 1 has described according to of the present invention and has been used for banknote to be identified;
Fig. 2 is the sectional view of ink speck on the banknote of Fig. 1 in magnetic history;
Fig. 3 is for setting forth according to producing the diagram of touching quick effect in the process that relatively moves between two magnetization ink specks of the present invention;
Fig. 4 has set forth the example of the magnetization ink speck that is used for anti-intuition of the present invention (counter intuitive); And
Fig. 5 has set forth and has been used for the magnetized multi-direction figure of ink speck of the present invention.
Fig. 1 has described document 1, and the document is the banknote based on paper or polymkeric substance in this example, has two magnetization ink specks 2 placing with respect to center line 3 symmetries on the banknote.The inking system that has meticulous magnetisable powder by loading is prepared this ink.This powder can be incorporated into for example known Nylobag, Polyplast or Polyscreen (these are the trade mark of Sericol Limited) non-pigment inking system or the reservation system that can be purchased off the shelf.Can select this inking system to fill to obtain best magnetic-particle, thereby and this inking system can comprise and use the ink thinning agent to reduce the viscosity of the ink that is loaded and be convenient to printing.Preferred a kind of magnetic is by alloy Nd at present
2Fe
14B (or its variant) forms, this alloy have at present can the commercial magnetic that obtains in the highest energy product, though other candidate comprises SmCo class alloy (Sm
2Co
17, SmCo
5), hard ferrite alloy (barium ferrite or strontium ferrite permanent magnet alloy), AlNiCo class alloy, CoP, FePt or CoPt alloy powder.Preferred as far as possible little this ultra-fine powder (typically particle size distribution is at 1-20 μ m) of change in size that uses, therefore commercial product needed experience such as ball milling, lapping using star lapping machine or heat treated crushing process and sieve and just form this powder.The typical volume of powder ratio is 15% or higher in the ink, for example is 30-40%.
Any appropriate process by such as serigraphy, intaglio printing, gravure printing, lithography, ink jet printing is printed onto magnetizable ink on the document.In Fig. 1, it is simply square that patch 2 is, although can magnetisable ink be printed onto on the document with the shape of any expection in principle, comprises that other geometric configuration, numeral or letter, bargraphs or picture represent.If desired, the surface coating such as varnish can be coated in magnetisable ink regions, make it avoid wearing and tearing and reduction surfaceness.In any case, in case after the printing, this zone is magnetized so that the multipole sequence of alternating polarity to be provided.For the situation of each patch 2 of Fig. 1, the figure that is magnetized is the shape that is parallel to the parallel lines equal spacing magnetic pole sequence that broken line 3 extends.For anisotropic powder, ink is still wet the time, and perhaps for the isotropy powder, ink is wet or when doing, and obtains magnetic alignment by the high-intensity magnetic field that each patch is applied anticipated shape.This can realize by any appropriate methods well known to those skilled in the art, for example by electromagnet, pulsed field magnetizing apparatus, superconducting magnet or permanent magnet systems, but will describe a kind of method for optimizing with reference to figure 2.
Fig. 2 shows and comprises the tight close magnetic ink patch 2 of impulse magnetization device anchor clamps of current load conductor 4-7, and according to traditional symbolic notation, sense of current passes and pierce into with being shown to alternation paper in each conductor.In the reality, each conductor 4-7 is the parallel branch that is wound in snakelike single copper cash.This conductor produces each magnetic field 8-11 of direction alternate as shown in the figure, thereby produces the linear magnetic pole sequence (being S-N-S-N-S in this example) of alternating polarity in the patch 2.Although the sequence of 5 magnetic poles only is shown in order to set forth convenient, in fact in 2 square centimeters patch, have 20 or more a plurality of magnetic pole, typical distance between centers of tracks is 0.3mm to 3mm.
The principle of impulse magnetization device is that the capacitive discharge unit is used to provide the magnetization that has very big electric current at short notice anchor clamps.These anchor clamps can produce thus and make for example NdFeB and the saturated required very high field of SmCo class material, and keep its temperature rising (because due to Ohmic heating) to be under the level that can cause the copper cash inefficacy simultaneously.Because the interaction in the magnetic field that is produced also produces great power between these conductors.Power between needed big electric current, Ohmic heating, the conductor and pulse control all are the factors that must calculate and consider when design magnetization anchor clamps and powder source.This is a kind of very technology of specialty, can produce great obstacle from existing document copying magnetizing pattern to the people who plans to fake.
For check shown in Fig. 1 and with reference to figure 2 described authenticities of carrying out magnetized document 1, the document along the line 3 is folding so that relation is faced in two patches, 2 formation of magnetised ink, and will have this and remain between the finger and thumb in the face of documentation section of patch, between two pages along magnetic pole sequence direction in each patch 2 slide relatively (that is to say the line direction of traversing each magnetic pole).Alternatively, the document can be folded in palm (or other suitable surface) thereby go up these two patches are formed in the face of relation, and finger is pressed in the page up that has patch partly goes up and make page up descend the slip of one page front and back relatively.To explain the influence that relatively moves between the patch 2 in these two kinds of situations with reference to figure 3.That is to say that Fig. 3 (a) represents (arbitrarily) starting condition, wherein two patches are in contact with one another, and the opposite magnetic pole in the magnetic pole in each patch and another patch is joined.Therefore will produce attractive force A betwixt.Along with these patches relatively move along assigned direction, these patches arrive the condition shown in Fig. 3 (b), and wherein similar magnetic pole joins in each patch.Therefore will produce repulsive force R betwixt now.Along with along further the relatively moving of same direction, arrive the condition shown in Fig. 3 (c), wherein two different magnetic poles of patch Semi-polarity join once more and produce attractive force A etc.In other words, relatively move between two pages, patch 2 alternately attracts each other and repels, and when the direction that relatively moves is opposite, the equivalent process that alternation attracts and repels will occur.Its effect is, along with patch when folder has been inserted between the continuous attraction position of repelling the position translation, a series of little spasm (jerk) can appear in mobile between the patch.When this effect occurring, very special by the sensation that user's Fingertip touch arrives, thisly feel to mean that the document that is folded has the texture of physical wave wrinkle, although in fact patch 2 has level and smooth surface.Also may hear the effect that this special spasm moves between two patches.
Therefore above-mentioned effect provides the device of distinguishing true document and false document by sense of touch, and wherein true document has according to regions of magnetised ink of the present invention, may be identical with true document on the false document visual but false document is unmagnetized or correctly do not magnetized.Can implement this measure by tangible mode, for example can educate the public it is recognized, the genuine notes ticket is physically smooth but folding and can feel that banknote has texture when rubbing with ad hoc fashion.Alternatively, can implement this measure snugly, the official who only limits to authorize about the knowledge of the verification method situation of passport management (for example for), because can't be magnetized from any specific printing zone of visually clearly seeing document, and this magnetized area may be capped the printing or be hidden in effectively in the whole graphical content of document.
Note, as previously mentioned, in fact having many linear magnetic magnetic poles although Fig. 3 shows 2 examples that contain 5 linear magnetic magnetic poles of each patch in order to set forth convenient.Similarly, there is opposite magnetic pole sequence in two patches, promptly is respectively S-N-S-N-S and N-S-N-S-N although Fig. 3 shows, if the magnetic pole sequence alternation in each patch, practical situation (when particularly the absolute number of magnetic pole increases) just not necessarily like this.
The typical area scope of magnetised ink patch 2 is 25 to 2500mm
2, be 100 to 400mm in a preferred embodiment
2The typical thickness scope of ink layer is 10 to 200 μ m, is 20 to 30 μ m in a preferred embodiment.The thickness of the coating of any varnish or other type should be as much as possible little on the ink patch, thereby required protection is provided and reduces mantle friction, and this thickness is about 4 μ m in a preferred embodiment.The intensity of the magnetic force that is produced between patch depends on the quantity of contributive magnetization powder, therefore along with plaque thickness and powder volume than and increase.This magnetism intensity is also with the reducing and increase of spacing between the adjacent pole in the sequence.People's sense of touch can detected minimum force along with the variation of frequency of stimulation (in this case for magnetizing the speed that relatively moves between the patch and the function of distance between two poles) changes, but we think that this minimum power is about 0.01 to 0.1 newton.Mode with example, when magnetised ink patch is of a size of 10mm * 10mm, when ink thickness is 30 μ m, loaded the saturated NdFeB powder of 35% volume ratio, and when the pole line spacing was 1mm, attractive force between two magnetised ink patch of aforementioned type or the estimated value of repulsive force when the patch spacing is 10 μ m were 0.09N.Therefore, will change for the power of 0.18N in the attraction of patch and the saltus step of repelling between the direction.
Notice that the multipole figure of type described here does not have the magnetic field of long-range.Along with the distance with the magnetized area surface increases, this magnetic field intensity reduces very fast, and the banknote that for example has aforementioned magnetization patch can not have influence on the conventional magnetic stripe that is placed on the credit card in same wallet or the wallet when normal the use.Interaction between the magnetization patch of stacked banknote can not cause hell and high water yet, and the thickness (typically being 60 μ m) that wherein has been printed the substrate of this patch between these magnetization patches separates.
With reference to figure 1 described example of the present invention is " the self-authentication true and false ", verifies two required patches 2 because document 1 itself has by described haptic methods.Yet, in other embodiments, can realize the checking of authenticity by " key " device that separates, wherein use the appropriate magnetic pole sequence magnetization should " key " device and this device is rubbed on the one or more magnetised ink patch on the document or the magnetised ink patch on the document is rubbed on this device.In this case, it is folding that document need not, and the document can comprise the proof label that for example adheres on the commodity.
Fig. 4 has set forth " anti-intuition " example that is used for according to the regions of magnetised ink of check authenticity of document of the present invention.In this case, ink is printed to and forms a series of discrete bar 12 on the document.Yet this ink is magnetized producing separately the magnetic pole vertical with bar 12, shown in the direction of the branch 13 of magnetized conductors among the figure.In other words, in order to produce the aforementioned quick effect of touching, need should the zone and another suitable magnetized zone along the length direction friction of bar 12, and by vertically promptly striding across the direction friction of this group bar, a series of 12 profile can intuitively allow the people feel texture.By suitably selecting the angle between magnetic history discal patch 12 and the branch 13, certainly produce any other desired angle relation between bar 12 and the pole orientation.
Fig. 5 has set forth the example of magnetizing pattern, wherein can present along a plurality of directions and touch quick effect.In this case, use magnetic pole 14 magnetised ink patch of triangular structure, make and when each direction in three directions (and in the other direction) shown in the arrow and another suitable magnetized area rub in figure, can run into alternating sequence-changing.
Claims (23)
1. an inspection has the method for the authenticity of document in magnetic ink zone, this magnetic ink zone is magnetized so that the multipole sequence of alternating polarity to be provided, this method comprises the step that relatively moves between second magnetic regions of the multipole sequence that makes described zone and have alternating polarity, described relatively moving along the direction of described sequence; This method comprises that also the sense of touch by the people detects the consequent process that alternation attracts and repels between these zones in this relatively moves process.
2. according to the process of claim 1 wherein that described second area is the second magnetic ink zone on the described document, this method comprises folding the document so that these two zones are formed the relations of facing, thereby and operation the document cause described relatively moving.
According to the process of claim 1 wherein described second area be carried on described document separated structures on, this method comprises makes described structure through described magnetic ink zone or make described magnetic ink zone through described structure.
4. the device that comprises a kind of document, the document has the magnetic ink zone that is magnetized with the multipole sequence that produces alternating polarity, check the authenticity of described document thus by following step: make described zone and have that the direction along described sequence relatively moves between second magnetic regions of multipole sequence of alternating polarity, and the sense of touch of personnel selection detect consequent in this relatively moves process the process of the attraction of alternation and repulsion between these zones.
5. according to the device of claim 4, wherein said second area is carried on the described document.
6. according to the device of claim 4, wherein said second area be carried on described document separated structures on.
7. according to the device of claim 4, wherein said second area is the second magnetic ink zone.
8. according to the device of claim 4 or 7, wherein said magnetic ink comprises the ink that is loaded with magnetisable powder.
9. device according to Claim 8, wherein said powder comprises one of following alloy: neodymium iron boron, SmCo, barium ferrite, strontium ferrite, aluminium nickel cobalt, phosphatization cobalt, iron platinum, cobalt platinum.
10. device according to Claim 8, wherein said powder size distribution range is 1 to 20
μm。
11. device according to Claim 8, wherein the volume ratio of powder is at least 15% in this ink.
12. according to the device of claim 4, the areal extent in wherein said magnetic ink zone is 25 to 2500mm
2
13. according to the device of claim 7, the areal extent in the wherein said second magnetic ink zone is 25 to 2500mm
2
14. according to the device of claim 4, the thickness range in wherein said magnetic ink zone is 10 to 200 μ m.
15. according to the device of claim 7, the thickness range in the wherein said second magnetic ink zone is 10 to 200 μ m.
16. according to the device of claim 4, wherein said magnetic ink zone presents parallel linear magnetic pole sequence.
17. according to the device of claim 7, the wherein said second magnetic ink zone presents parallel linear magnetic pole sequence.
18. according to the device of claim 16, the ink in the wherein said magnetic ink zone is deposited as a plurality of discrete linear structures, and described magnetic pole is along extending at angle with the direction of described structure.
19. according to the device of claim 17, the ink in the wherein said second magnetic ink zone is deposited as a plurality of discrete linear structures, and described magnetic pole is along extending at angle with the direction of described structure.
20. according to the device of claim 16, wherein said magnetic ink zone forms a plurality of described sequence of extending along mutual vergence direction.
21. according to the device of claim 17, wherein said second magnetic ink zone forms a plurality of described sequence of extending along mutual vergence direction.
22. according to the device of claim 4, the spacing range of the magnetic pole in the wherein said sequence is 0.3 to 3mm.
23. according to the device of claim 4, wherein said magnetic ink zone has material coating to reduce friction.
24. according to the device of claim 7, the wherein said second magnetic ink zone has material coating to reduce friction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0320957.4A GB0320957D0 (en) | 2003-09-08 | 2003-09-08 | Document authentication |
| GB0320957.4 | 2003-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1849629A CN1849629A (en) | 2006-10-18 |
| CN100533492C true CN100533492C (en) | 2009-08-26 |
Family
ID=29226663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800258253A Expired - Fee Related CN100533492C (en) | 2003-09-08 | 2004-08-19 | Magnetic document authentication feature to be detected by the human sense of touch |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US7715611B2 (en) |
| EP (1) | EP1665175B1 (en) |
| CN (1) | CN100533492C (en) |
| AT (1) | ATE407414T1 (en) |
| AU (1) | AU2004271312B2 (en) |
| CA (1) | CA2534840A1 (en) |
| DE (1) | DE602004016356D1 (en) |
| ES (1) | ES2311848T3 (en) |
| GB (1) | GB0320957D0 (en) |
| MX (1) | MXPA06002501A (en) |
| WO (1) | WO2005024735A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9825884B2 (en) | 2013-12-30 | 2017-11-21 | Cavium, Inc. | Protocol independent programmable switch (PIPS) software defined data center networks |
| US9742694B2 (en) | 2014-06-19 | 2017-08-22 | Cavium, Inc. | Method of dynamically renumbering ports and an apparatus thereof |
| US10050833B2 (en) | 2014-06-19 | 2018-08-14 | Cavium, Inc. | Method of reducing latency in a flexible parser and an apparatus thereof |
| US9628385B2 (en) | 2014-06-19 | 2017-04-18 | Cavium, Inc. | Method of identifying internal destinations of networks packets and an apparatus thereof |
| US9961167B2 (en) | 2014-06-19 | 2018-05-01 | Cavium, Inc. | Method of modifying packets to a generic format for enabling programmable modifications and an apparatus thereof |
| US9635146B2 (en) | 2014-06-19 | 2017-04-25 | Cavium, Inc. | Method of using bit vectors to allow expansion and collapse of header layers within packets for enabling flexible modifications and an apparatus thereof |
| US10616380B2 (en) | 2014-06-19 | 2020-04-07 | Cavium, Llc | Method of handling large protocol layers for configurable extraction of layer information and an apparatus thereof |
| US9531848B2 (en) * | 2014-06-19 | 2016-12-27 | Cavium, Inc. | Method of using generic modification instructions to enable flexible modifications of packets and an apparatus thereof |
| US9606781B2 (en) | 2014-11-14 | 2017-03-28 | Cavium, Inc. | Parser engine programming tool for programmable network devices |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4455484A (en) * | 1974-01-08 | 1984-06-19 | Whitehead Edwin N | Identification card which is magnetically coded to prevent counterfeiting |
| US4480177A (en) * | 1981-02-18 | 1984-10-30 | Allen Milton F | Currency identification method |
| EP0276814A2 (en) * | 1987-01-27 | 1988-08-03 | Rand McNally & Company | Object verification system and method |
| EP0373500A2 (en) * | 1988-12-12 | 1990-06-20 | Vittorio Giuseppe | Anti-forgery system for paper money or other documents |
| US6403169B1 (en) * | 1997-06-11 | 2002-06-11 | Securency Pty Ltd. | Method of producing a security document |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2042979B (en) | 1979-02-23 | 1982-09-22 | Emi Ltd | Magnetic recording |
| US6327749B1 (en) * | 2000-05-19 | 2001-12-11 | Lawrence Emest Antinone | Money clip |
| AU2002951242A0 (en) * | 2002-09-05 | 2002-09-19 | Adaps Pty Ltd | A clip |
-
2003
- 2003-09-08 GB GBGB0320957.4A patent/GB0320957D0/en not_active Ceased
-
2004
- 2004-08-19 EP EP04768130A patent/EP1665175B1/en not_active Expired - Lifetime
- 2004-08-19 AT AT04768130T patent/ATE407414T1/en not_active IP Right Cessation
- 2004-08-19 AU AU2004271312A patent/AU2004271312B2/en not_active Ceased
- 2004-08-19 US US10/570,741 patent/US7715611B2/en active Active
- 2004-08-19 MX MXPA06002501A patent/MXPA06002501A/en active IP Right Grant
- 2004-08-19 WO PCT/GB2004/003571 patent/WO2005024735A1/en active IP Right Grant
- 2004-08-19 DE DE602004016356T patent/DE602004016356D1/en not_active Expired - Lifetime
- 2004-08-19 CA CA002534840A patent/CA2534840A1/en not_active Abandoned
- 2004-08-19 ES ES04768130T patent/ES2311848T3/en not_active Expired - Lifetime
- 2004-08-19 CN CNB2004800258253A patent/CN100533492C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4455484A (en) * | 1974-01-08 | 1984-06-19 | Whitehead Edwin N | Identification card which is magnetically coded to prevent counterfeiting |
| US4480177A (en) * | 1981-02-18 | 1984-10-30 | Allen Milton F | Currency identification method |
| EP0276814A2 (en) * | 1987-01-27 | 1988-08-03 | Rand McNally & Company | Object verification system and method |
| EP0373500A2 (en) * | 1988-12-12 | 1990-06-20 | Vittorio Giuseppe | Anti-forgery system for paper money or other documents |
| US6403169B1 (en) * | 1997-06-11 | 2002-06-11 | Securency Pty Ltd. | Method of producing a security document |
Also Published As
| Publication number | Publication date |
|---|---|
| US7715611B2 (en) | 2010-05-11 |
| AU2004271312A1 (en) | 2005-03-17 |
| US20070014582A1 (en) | 2007-01-18 |
| ES2311848T3 (en) | 2009-02-16 |
| AU2004271312B2 (en) | 2009-07-30 |
| DE602004016356D1 (en) | 2008-10-16 |
| EP1665175B1 (en) | 2008-09-03 |
| GB0320957D0 (en) | 2003-10-08 |
| EP1665175A1 (en) | 2006-06-07 |
| CN1849629A (en) | 2006-10-18 |
| WO2005024735A1 (en) | 2005-03-17 |
| CA2534840A1 (en) | 2005-03-17 |
| ATE407414T1 (en) | 2008-09-15 |
| MXPA06002501A (en) | 2006-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10737526B2 (en) | Apparatuses and processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles | |
| CN1221919C (en) | Security device having multiple security features and method of making same | |
| CN1054571C (en) | Security threads having at least two security detection features and security papers employing same | |
| CN101076454B (en) | Security element comprising magnetic materials having the same remanence and a different coercive field intensity | |
| US12115805B2 (en) | Processes for producing optical effect layers comprising oriented non-spherical magnetic or magnetizable pigment particles | |
| CN100533492C (en) | Magnetic document authentication feature to be detected by the human sense of touch | |
| EP2531357A2 (en) | Security elements and methods and apparatus for their manufacture | |
| US8950679B2 (en) | Security substrates for security documents | |
| KR20200049792A (en) | Assembly and process for producing an optical effect layer comprising oriented non-spherical one-piece magnetic or magnetisable pigment particles | |
| KR20220088906A (en) | Magnetic assembly and process for making optical effect layers comprising oriented non-spherical magnetic or magnetisable pigment particles | |
| AU2015200596B2 (en) | Security elements and methods and apparatus for their manufacture | |
| CN112329902A (en) | Magnetic anti-counterfeiting element and magnetic anti-counterfeiting product |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20100819 |